Machine for molding building-blocks or artificial stone.



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MACHINE FOR MOLDING BUILDING VBLOCKS OR ARTIFICIAL S'INE.

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APPLICATION FILED FEB. 10, 1903.-.

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APPLICATION FILED FEB. 10, 1903.

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PATENT OEEIGE.

OHARLEs HENRY HUT'OHINGS, OE TORONTO, OANADA,AssIeNOR OE Two-THIRDs ToPHILIP w. sTANHoPE, OE TORONTO, CANADA.

MACHINE FOR-MOLDING' BUILDING-BLOCKSYOB ARTIFICIAL STONE.

SPECIFICATION forming parrot Letters Patent No. 73o,2i2, uaeeaune 2,1903.

Application filed February 10, 1903. Serial No. 142,809. (No model.)

paratus for molding building-blocks or arti,

ficial stone made from a mixture A'of granular materials, such as cementand sand or other siliceous and cementing substances',rmixed together ina substantially dry state prior to being placed in the mold-box; and itrelates more particularly to the peculiar construction and operation ofthe mold-box whereby the building-block or artificialstone can be moldedwith a hollow core and grooved ends and easily removed from the mold-boxwithout the slightest concussion which would disturb or disintegrate thehomogenity of the molded mass. One of the most serious obstacles metwith in the manufacture of building-blocks or artificial stone from amixture of sand and cement is the'liability of the molded block or stoneto crumble away or shatter as a result of the slightest concussionduring its removal from the mold-box, and to overcome this obstacle'andto so construct the apparatus that the blocks or stones can -be rapidlymade and ornamented with any suitable design in imitation of cut orcarved stone is the object of the present invention, which is attainedby the peculiar construction and operation of the mold-box and themanner in which it is operated.

In carrying out the invention I journal the bottom o f the mold-box insuitable bearings connected to or forming part of the main frame, insuch aV manner that the mold-box can be maintained in an uprightposition when the composition is being molded to the requisite shape anddesign and can thereafter i be turned at right angles to the uprightposition and opened topermit ofthe removal of one of the mold-box sidesand the molded block or stone on a carriage whichl forms a movablesupport for such removable side and the molded article supportedthereon, as herel inafter more fully set forth,and more particularlypointed; out in the claims.

`. In the drawings, Figurel` is a perspective view ofthe completeapparatus, showing the mold-box in an upright position to receive thegranular mixture. Fig. 2 is a similar view to Fig. 1, showing themold-box upset after the building-block' or artificial stone has beenmolded .and prior to the withdrawal of the removable core. Fig'isasimilar view to Fig. 2, showing 4theposi'tion of the core and of thesides and ends of the mold-box when opened to allow of the removal ot'the molded buildingblock or artificial stone. Fig. 4F is a perspectiveviewof the mold-box, the removable core and its Operating mechanism, andthe adja. cent part of the frame.' Fig. 5 is a sectional view of one ofthe ends of the mold-box. Fig. 6 is a perspective View of a moldedbuilding block or stone.

Like letters of reference refer to like parts throughout thespecification and drawings.

The top of thev frame a, at the front thereof,

is fitted with bearing-boxes b, in which are journaled the lnandrels cfor the ends of the mold-box bottom d, and formed in the moldbox` bottomd are apertures e, through which move the removable core or cores'f,integrally formed with or secured to a .cross-head g, havingguide-blocks h, movable in the guideways t, formed in the sidesj of aframe h, connected to the under side of the mold-box bottom d. .-Rigidlyuniting the lower ends of the.

frame sidesj` is an end piece or brace l, having a medialIy-locatedscrew-th readed bore m,

through which moves the operating-screw 0v o", together with the liningss for the opposite side and the ends, is made from a non-corrosive metalin order that the granular particles will not adhere thereto and impairthe sharpness of the outline and pattern of the molded block or stone.Hinged to the ends of the IOC mold-box bottom d are the end sides t ot'the mold-box, having inward projections u to form in the ends of themolded block or stone the end grooves u', and projecting from the rearside of the mold-box bottom d are outturned lugs o to engage the lowerend ot' the removable side w, which is used not only for the purpose ofmolding the adjacent side of the building block or stone, but is alsoemployed as a follow-board, upon which the removable block or stone isWithdrawn from the mold-box and permitted to set and harden.

Supported on the top of the frame a, in rear of the mold-box, aretrack-rails as, upon which is mounted a movable carriage y to supportthe removable side w when the moldbox has been turned into the positionshown in Fig. 2 and Withdraw the removable side w and the moldedbuilding block or stone therefrom when the ends and front side of themold-box have been opened into the position shown in Fig. 3. In moldingthe building block or stone the sides and ends of the moldbox are closedinto the position shown in Fig. 4 of the drawings, the front and rearsides of the mold-box being fitted with pivoted latches z, which engagethe cranked ends of the rockshaft ct', connected to the end sides t torigidly lock the top of the front, rear, and end sides together. Thegranular substancesor, in other words, the mixture of sand andcement-are then placed in the mold-box and 'tamped or pressed to therequisite shape, the

uppermost side of the block when the moldbox is in this position beingthen leveled oft by a trowel or other tool.

When the block has been properly molded, the mold-box is turned into theposition shown `in Fig. 2, in which position the removable side engagesand rests upon the carriage y. When the mold-box has been turned intothis position, the removable core is withdrawn horizontally from themolded block or stone by the rotationof the operating-screw, and therock-shafts a are then turned to disengage the cranked ends from thelatches z, and the end and front sides are then opened into the positionshown in Fig. 3, in which position the front side is supported by twoarms b', secured to the front of the side pieces j, to relieve thestrain upon the hinges c', connecting the front side to the bottom d.The hinges d', connecting the end sides to the bottom CZ, are freed fromall torsional strains when the mold-box has been turned into theposition shown in Figs. 2 and 3, and consequently it is unnecessary toprovide any auxiliary means for supporting the end sides when themold-box is in this position.

Having thus fully described iny invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. `In a machine for molding building-blocks and artificial stone thecombination of the main frame, a mold-box journaled therein consistingof a bottom side, two end sides and a front side connected to the bottomside, a

removable side opposed to the front side and means for temporarilylocking the sides together, substantially as specified.

2. In a machine formoldingbuilding-blocks and artificial stone, thecombination of the main frame, a mold-box journaled therein, a removableside for the mold-box, and a carriage mounted on the main frame toengage and support the removable side when the mold-box is in its upsetposition, substantially as specified.

3. In a machine for molding building-blocks and artificial stone, thecombination of a main frame, a mold-box journaled therein consisting ofa bottom side, a front side and two end sides connected to the bottomside, a removable side opposed to the front side, means for temporarilylocking the sides together and acarriage mounted on the main frame toengage and support the removable side when the mold-box is in its upsetposition, substantially as specified.

et. Inamachineformoldingbuilding-blocks and artificial stone, thecombination of a main frame, a mold-box journaled therein, a removableside for the mold-box, a removable core for the mold-box and a carriagemounted `on the main frame to engage and support the removable side whenthe mold-box is in its upset position, substantially as specified.

5. In a machine for molding building-blocks and artificial stone, thecombination of a main frame, a mold-box journaled therein consisting ot'a bottom side, a front side and two end sides connected to the bottomside, and a removable side opposed to the front side, and means fortemporarily locking the sides together, a removable core for themold-box and a carriage mounted on the main frame to engage and supportthe removable core when the mold-box is in its upset position,substantially as specified.

6. In a machine for molding building-blocks and artificial stone, thecombination of a main frame,a mold-box journaled therein having anapertured bottom, a removable side for the mold-box, a removable coremovable through the apertured bottom, meansforoperatingsaid core andguiding its movement when moving through the apertured bottom and amovable carriage mounted on the main frame to engage the removable sidewhen the mold-box is in its upset position, substantially as specified.

7. In a machine for molding building-blocks and articial stone thecombination of a main frame, a mold-box mounted therein having aremovable side to be used as a follow-board for the molded material, andmeans for separating the removable side from the remaining sides of themold-box, substantially as specitied.

Toronto, January 9, A. D. 1903.

CHARLES HENRY I-IUTCI'IINGS.

In presence of- C. H. Rlcnns, F. B. JARMAN.

